Dolphins find torpedo: 19th-century Torpedo was discovered by Navy dolphins. A 19th-century Torpedo found, In the late 19th century, the Howell torpedo was an incredibly advanced piece of military equipment, a breakthrough device in the United States' quest to achieve naval dominance. But only one surviving Howell torpedo was known to exist—until Navy dolphins nosed up another. The US Navy employs bottlenose dolphins to locate underwater military equipment that can't yet be detected by machines. Using their sonar, the dolphins search for objects—usually mines—on the ocean floor. If they detect an object, they are trained to tap their noses to the front of the boat where the Navy specialists are waiting. If they find nothing in the area, they tap the back of the boat instead. The Huffingposts reports that, when the dolphins started indicating positive results in an unexpected area, the specialist ordered one of the dolphins to take a marker to the object. Sure enough, Navy div